Homework Answers
A flow with free surface is known as open channel flow, where the pressure exerting will be same throughout the flow(atmospheric pressure when the fluid is water). Here the flow takesplace only due to the gravity force.
Froudes number is the square root of ratio of inertia force to gravity force. Froudes number model is used only when the gravitational force is predominant.
Hence the answer is option b- open channel flow is with a free surface and the flow is driven by gravity
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V gy Froude number Fr = is important in open channel flow of water, because a....
V 9) Froude number Fr = gy is important in open channel flow of water, because...
V 9) Froude number Fr = gy is important in open channel flow of water, because a. Open channel flow has a pressure that is different everywhere. b. Open channel flow is with a free surface and the flow is driven by gravity. c. Vgy represented a wave from bottom to surface. d. Wetted perimeter of water channel P can be a rough surface. 10) An open channel flow in a hydraulic lab is designed to line artificially with corrugated...
8) Cheater knowing Fluid Dynamics? - Red Sox ace Jon Lester pitched against the St. Louis...
8) Cheater knowing Fluid Dynamics? - Red Sox ace Jon Lester pitched against the St. Louis Cardinals in Game 1 of the 2013 World Series, scattering five hits while striking out eight players over 7.2 scoreless innings en route to an 8-1 Boston win for an early 1-0 series lead. But people noticed that he constantly rubbed the ball against the inside of his glove, maybe with resin or some other gel? Or trying to roughen the ball with a...
7) In a bicycle race, a biker was riding at 60 km/h alone. She wanted to...
7) In a bicycle race, a biker was riding at 60 km/h alone. She wanted to reduce the drag coefficient by drafting behind her teammate to enjoy a reduced drag, thus saving energy. If she uses the same effort that is the same power (Power = F x V), how fast did she go by drafting? a. 68.2 km/h b. 72.4 km/h c. 79.6 km/h d. 82.5 km/h 8) Cheater knowing Fluid Dynamics? - Red Sox ace Jon Lester pitched...
7) In a bicycle race, a biker was riding at 60 km/h alone. She wanted to...
7) In a bicycle race, a biker was riding at 60 km/h alone. She wanted to reduce the drag coefficient by drafting behind her teammate to enjoy a reduced drag, thus saving energy. If she uses the same effort that is the same power (Power = F x V), how fast did she go by drafting? a 68.2 km/h b. 72.4 km/h 79.6 km/h d. 82.5 km/h 0. 8) Cheater knowing Fluid Dynamics? - Red Sox ace Jon Lester pitched...
Open channel flow must have a surface. Because of the free surface, is the driving force...
Open channel flow must have a surface. Because of the free surface, is the driving force in open channel flow. The application of the equation is most effective to estimate the rapid loss of energy when determining the shape of flow profiles for Rapidly varied flow. Flow in open channels is mainly in the regime. Depth of Flow (y or d) – is the vertical distance of the lowest point of a channel section from the surface. In slope is...
CM&B: 11.3 The principal characteristics of steady flow in a wide rectangular channel are: The mean...
CM&B: 11.3 The principal characteristics of steady flow in a wide rectangular channel are: The mean velocity (V) The frictional resistance (F The density (p) and viscosity (u) of the fluid The depth (y) of flow or the channel length (Z)- as appropriate The bed slope (So) and surface roughness (k) Gravitational acceleration (g) Show that these can be expressed in the form of the following II groups: РVy Reynolds No. Re V Froude No Fr gy ks Relative roughness...
7. Given the water surface (M2) profile, channel slope is MILD. Drawdown of the water surface occ...
7. Given the water surface (M2) profile, channel slope is MILD. Drawdown of the water surface occurs with approach to the free overfall For a 90-degree v-notch channel geometry, bed slope 0.0001, a Manning-n of 0.01 and a flow of 0.425 m'/s find (a) the Froude number and flow regime and (b) Critical depth near the free overfall (c) How far upstream does the flow become uniform (d) What is the water depth at this upstream location? M2 NDL DL...
Fluid Mechanics. Please answer as many as you can. Short answer questions 1) Explain the physical...
Fluid Mechanics. Please answer as many as you can.
Short answer questions 1) Explain the physical meaning of the acceleration term uVu, where u is the velocity vector in a fluid. 2) Name the two equations that are required to describe the flow of an inertial jet in an incompressible, unstratified fluid. 3) What is the “Continuum Hypothesis”? 4) Describe how a viscous boundary layer adjacent to a solid surface results in transfer of momentum to/from that surface. 5) What...
This question is worth 12 marks. A lake high up in the mountains supplies water to...
This question is worth 12 marks.
A lake high up in the mountains supplies water to a
hydroelectric power station similar to Trawsfynydd Lake shown in
Figure 1.
Figure 1 Trawsfynydd Lake that feeds water to
Maentwrog hydroelectric power station, Wales
The surface of the lake is 1000m above sea-level and the deepest
point in the lake is 180m below its surface. Assume that the water
has a uniform density of and
that
.
a.Figure 2 shows the cross-section of...
An aqueduct is an open water channel on top of a support bridge. The bridge maintains...
An aqueduct is an open water channel on top of a support bridge. The bridge maintains a shallow slope to use gravity to carry water (p = 1000 kg/m”, u = 10-3 Pa.s) over long distances from a reservoir to a community. The aqueduct shown below has a rectangular cross section, as shown in section A-A, with width W = 1.2 m. The water level in the duct is a constant d = 1 m over the entire length of...
V 9) Froude number Fr = gy is important in open channel flow of water, because a. Open channel flow has a pressure that is different everywhere. b. Open channel flow is with a free surface and the flow is driven by gravity. c. Vgy represented a wave from bottom to surface. d. Wetted perimeter of water channel P can be a rough surface. 10) An open channel flow in a hydraulic lab is designed to line artificially with corrugated...
8) Cheater knowing Fluid Dynamics? - Red Sox ace Jon Lester pitched against the St. Louis Cardinals in Game 1 of the 2013 World Series, scattering five hits while striking out eight players over 7.2 scoreless innings en route to an 8-1 Boston win for an early 1-0 series lead. But people noticed that he constantly rubbed the ball against the inside of his glove, maybe with resin or some other gel? Or trying to roughen the ball with a...
7) In a bicycle race, a biker was riding at 60 km/h alone. She wanted to reduce the drag coefficient by drafting behind her teammate to enjoy a reduced drag, thus saving energy. If she uses the same effort that is the same power (Power = F x V), how fast did she go by drafting? a. 68.2 km/h b. 72.4 km/h c. 79.6 km/h d. 82.5 km/h 8) Cheater knowing Fluid Dynamics? - Red Sox ace Jon Lester pitched...
7) In a bicycle race, a biker was riding at 60 km/h alone. She wanted to reduce the drag coefficient by drafting behind her teammate to enjoy a reduced drag, thus saving energy. If she uses the same effort that is the same power (Power = F x V), how fast did she go by drafting? a 68.2 km/h b. 72.4 km/h 79.6 km/h d. 82.5 km/h 0. 8) Cheater knowing Fluid Dynamics? - Red Sox ace Jon Lester pitched...
Open channel flow must have a surface. Because of the free surface, is the driving force in open channel flow. The application of the equation is most effective to estimate the rapid loss of energy when determining the shape of flow profiles for Rapidly varied flow. Flow in open channels is mainly in the regime. Depth of Flow (y or d) – is the vertical distance of the lowest point of a channel section from the surface. In slope is...
CM&B: 11.3 The principal characteristics of steady flow in a wide rectangular channel are: The mean velocity (V) The frictional resistance (F The density (p) and viscosity (u) of the fluid The depth (y) of flow or the channel length (Z)- as appropriate The bed slope (So) and surface roughness (k) Gravitational acceleration (g) Show that these can be expressed in the form of the following II groups: РVy Reynolds No. Re V Froude No Fr gy ks Relative roughness...
7. Given the water surface (M2) profile, channel slope is MILD. Drawdown of the water surface occurs with approach to the free overfall For a 90-degree v-notch channel geometry, bed slope 0.0001, a Manning-n of 0.01 and a flow of 0.425 m'/s find (a) the Froude number and flow regime and (b) Critical depth near the free overfall (c) How far upstream does the flow become uniform (d) What is the water depth at this upstream location? M2 NDL DL...
Fluid Mechanics. Please answer as many as you can.
Short answer questions 1) Explain the physical meaning of the acceleration term uVu, where u is the velocity vector in a fluid. 2) Name the two equations that are required to describe the flow of an inertial jet in an incompressible, unstratified fluid. 3) What is the “Continuum Hypothesis”? 4) Describe how a viscous boundary layer adjacent to a solid surface results in transfer of momentum to/from that surface. 5) What...
This question is worth 12 marks.
A lake high up in the mountains supplies water to a
hydroelectric power station similar to Trawsfynydd Lake shown in
Figure 1.
Figure 1 Trawsfynydd Lake that feeds water to
Maentwrog hydroelectric power station, Wales
The surface of the lake is 1000m above sea-level and the deepest
point in the lake is 180m below its surface. Assume that the water
has a uniform density of and
that
.
a.Figure 2 shows the cross-section of...
An aqueduct is an open water channel on top of a support bridge. The bridge maintains a shallow slope to use gravity to carry water (p = 1000 kg/m”, u = 10-3 Pa.s) over long distances from a reservoir to a community. The aqueduct shown below has a rectangular cross section, as shown in section A-A, with width W = 1.2 m. The water level in the duct is a constant d = 1 m over the entire length of...
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